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<pre><span class="sourceLineNo">001</span>/* ===========================================================<a name="line.1"></a>
<span class="sourceLineNo">002</span> * JFreeChart : a free chart library for the Java(tm) platform<a name="line.2"></a>
<span class="sourceLineNo">003</span> * ===========================================================<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * (C) Copyright 2000-2011, by Object Refinery Limited and Contributors.<a name="line.5"></a>
<span class="sourceLineNo">006</span> *<a name="line.6"></a>
<span class="sourceLineNo">007</span> * Project Info:  http://www.jfree.org/jfreechart/index.html<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> * This library is free software; you can redistribute it and/or modify it<a name="line.9"></a>
<span class="sourceLineNo">010</span> * under the terms of the GNU Lesser General Public License as published by<a name="line.10"></a>
<span class="sourceLineNo">011</span> * the Free Software Foundation; either version 2.1 of the License, or<a name="line.11"></a>
<span class="sourceLineNo">012</span> * (at your option) any later version.<a name="line.12"></a>
<span class="sourceLineNo">013</span> *<a name="line.13"></a>
<span class="sourceLineNo">014</span> * This library is distributed in the hope that it will be useful, but<a name="line.14"></a>
<span class="sourceLineNo">015</span> * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY<a name="line.15"></a>
<span class="sourceLineNo">016</span> * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public<a name="line.16"></a>
<span class="sourceLineNo">017</span> * License for more details.<a name="line.17"></a>
<span class="sourceLineNo">018</span> *<a name="line.18"></a>
<span class="sourceLineNo">019</span> * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a>
<span class="sourceLineNo">020</span> * License along with this library; if not, write to the Free Software<a name="line.20"></a>
<span class="sourceLineNo">021</span> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,<a name="line.21"></a>
<span class="sourceLineNo">022</span> * USA.<a name="line.22"></a>
<span class="sourceLineNo">023</span> *<a name="line.23"></a>
<span class="sourceLineNo">024</span> * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. <a name="line.24"></a>
<span class="sourceLineNo">025</span> * Other names may be trademarks of their respective owners.]<a name="line.25"></a>
<span class="sourceLineNo">026</span> *<a name="line.26"></a>
<span class="sourceLineNo">027</span> * ------------------<a name="line.27"></a>
<span class="sourceLineNo">028</span> * DataUtilities.java<a name="line.28"></a>
<span class="sourceLineNo">029</span> * ------------------<a name="line.29"></a>
<span class="sourceLineNo">030</span> * (C) Copyright 2003-2009, by Object Refinery Limited and contributors.<a name="line.30"></a>
<span class="sourceLineNo">031</span> *<a name="line.31"></a>
<span class="sourceLineNo">032</span> * Original Author:  David Gilbert (for Object Refinery Limited);<a name="line.32"></a>
<span class="sourceLineNo">033</span> * Contributor(s):   Peter Kolb (patch 2511330);<a name="line.33"></a>
<span class="sourceLineNo">034</span> *<a name="line.34"></a>
<span class="sourceLineNo">035</span> * Changes<a name="line.35"></a>
<span class="sourceLineNo">036</span> * -------<a name="line.36"></a>
<span class="sourceLineNo">037</span> * 05-Mar-2003 : Version 1 (DG);<a name="line.37"></a>
<span class="sourceLineNo">038</span> * 03-Mar-2005 : Moved createNumberArray() and createNumberArray2D() methods<a name="line.38"></a>
<span class="sourceLineNo">039</span> *               from the DatasetUtilities class (DG);<a name="line.39"></a>
<span class="sourceLineNo">040</span> * 17-May-2005 : Added calculateColumnTotal() and calculateRowTotal()<a name="line.40"></a>
<span class="sourceLineNo">041</span> *               methods (DG);<a name="line.41"></a>
<span class="sourceLineNo">042</span> * 28-Jan-2009 : Added equal(double[][], double[][]) method (DG);<a name="line.42"></a>
<span class="sourceLineNo">043</span> * 28-Jan-2009 : Added clone(double[][]) method (DG);<a name="line.43"></a>
<span class="sourceLineNo">044</span> * 04-Feb-2009 : Added calculateColumnTotal/RowTotal variants (PK);<a name="line.44"></a>
<span class="sourceLineNo">045</span> *<a name="line.45"></a>
<span class="sourceLineNo">046</span> */<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span>package org.jfree.data;<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span>import java.util.Arrays;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import org.jfree.data.general.DatasetUtilities;<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>/**<a name="line.53"></a>
<span class="sourceLineNo">054</span> * Utility methods for use with some of the data classes (but not the datasets,<a name="line.54"></a>
<span class="sourceLineNo">055</span> * see {@link DatasetUtilities}).<a name="line.55"></a>
<span class="sourceLineNo">056</span> */<a name="line.56"></a>
<span class="sourceLineNo">057</span>public abstract class DataUtilities {<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span>    /**<a name="line.59"></a>
<span class="sourceLineNo">060</span>     * Tests two arrays for equality.  To be considered equal, the arrays must<a name="line.60"></a>
<span class="sourceLineNo">061</span>     * have exactly the same dimensions, and the values in each array must also<a name="line.61"></a>
<span class="sourceLineNo">062</span>     * match (two values that qre both NaN or both INF are considered equal<a name="line.62"></a>
<span class="sourceLineNo">063</span>     * in this test).<a name="line.63"></a>
<span class="sourceLineNo">064</span>     *<a name="line.64"></a>
<span class="sourceLineNo">065</span>     * @param a  the first array (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.65"></a>
<span class="sourceLineNo">066</span>     * @param b  the second array (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.66"></a>
<span class="sourceLineNo">067</span>     *<a name="line.67"></a>
<span class="sourceLineNo">068</span>     * @return A boolean.<a name="line.68"></a>
<span class="sourceLineNo">069</span>     *<a name="line.69"></a>
<span class="sourceLineNo">070</span>     * @since 1.0.13<a name="line.70"></a>
<span class="sourceLineNo">071</span>     */<a name="line.71"></a>
<span class="sourceLineNo">072</span>    public static boolean equal(double[][] a, double[][] b) {<a name="line.72"></a>
<span class="sourceLineNo">073</span>        if (a == null) {<a name="line.73"></a>
<span class="sourceLineNo">074</span>            return (b == null);<a name="line.74"></a>
<span class="sourceLineNo">075</span>        }<a name="line.75"></a>
<span class="sourceLineNo">076</span>        if (b == null) {<a name="line.76"></a>
<span class="sourceLineNo">077</span>            return false;  // already know 'a' isn't null<a name="line.77"></a>
<span class="sourceLineNo">078</span>        }<a name="line.78"></a>
<span class="sourceLineNo">079</span>        if (a.length != b.length) {<a name="line.79"></a>
<span class="sourceLineNo">080</span>            return false;<a name="line.80"></a>
<span class="sourceLineNo">081</span>        }<a name="line.81"></a>
<span class="sourceLineNo">082</span>        for (int i = 0; i &lt; a.length; i++) {<a name="line.82"></a>
<span class="sourceLineNo">083</span>            if (!Arrays.equals(a[i], b[i])) {<a name="line.83"></a>
<span class="sourceLineNo">084</span>                return false;<a name="line.84"></a>
<span class="sourceLineNo">085</span>            }<a name="line.85"></a>
<span class="sourceLineNo">086</span>        }<a name="line.86"></a>
<span class="sourceLineNo">087</span>        return true;<a name="line.87"></a>
<span class="sourceLineNo">088</span>    }<a name="line.88"></a>
<span class="sourceLineNo">089</span><a name="line.89"></a>
<span class="sourceLineNo">090</span>    /**<a name="line.90"></a>
<span class="sourceLineNo">091</span>     * Returns a clone of the specified array.<a name="line.91"></a>
<span class="sourceLineNo">092</span>     *<a name="line.92"></a>
<span class="sourceLineNo">093</span>     * @param source  the source array (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.93"></a>
<span class="sourceLineNo">094</span>     *<a name="line.94"></a>
<span class="sourceLineNo">095</span>     * @return A clone of the array.<a name="line.95"></a>
<span class="sourceLineNo">096</span>     *<a name="line.96"></a>
<span class="sourceLineNo">097</span>     * @since 1.0.13<a name="line.97"></a>
<span class="sourceLineNo">098</span>     */<a name="line.98"></a>
<span class="sourceLineNo">099</span>    public static double[][] clone(double[][] source) {<a name="line.99"></a>
<span class="sourceLineNo">100</span>        if (source == null) {<a name="line.100"></a>
<span class="sourceLineNo">101</span>            throw new IllegalArgumentException("Null 'source' argument.");<a name="line.101"></a>
<span class="sourceLineNo">102</span>        }<a name="line.102"></a>
<span class="sourceLineNo">103</span>        double[][] clone = new double[source.length][];<a name="line.103"></a>
<span class="sourceLineNo">104</span>        for (int i = 0; i &lt; source.length; i++) {<a name="line.104"></a>
<span class="sourceLineNo">105</span>            if (source[i] != null) {<a name="line.105"></a>
<span class="sourceLineNo">106</span>                double[] row = new double[source[i].length];<a name="line.106"></a>
<span class="sourceLineNo">107</span>                System.arraycopy(source[i], 0, row, 0, source[i].length);<a name="line.107"></a>
<span class="sourceLineNo">108</span>                clone[i] = row;<a name="line.108"></a>
<span class="sourceLineNo">109</span>            }<a name="line.109"></a>
<span class="sourceLineNo">110</span>        }<a name="line.110"></a>
<span class="sourceLineNo">111</span>        return clone;<a name="line.111"></a>
<span class="sourceLineNo">112</span>    }<a name="line.112"></a>
<span class="sourceLineNo">113</span><a name="line.113"></a>
<span class="sourceLineNo">114</span>    /**<a name="line.114"></a>
<span class="sourceLineNo">115</span>     * Returns the total of the values in one column of the supplied data<a name="line.115"></a>
<span class="sourceLineNo">116</span>     * table.<a name="line.116"></a>
<span class="sourceLineNo">117</span>     *<a name="line.117"></a>
<span class="sourceLineNo">118</span>     * @param data  the table of values (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.118"></a>
<span class="sourceLineNo">119</span>     * @param column  the column index (zero-based).<a name="line.119"></a>
<span class="sourceLineNo">120</span>     *<a name="line.120"></a>
<span class="sourceLineNo">121</span>     * @return The total of the values in the specified column.<a name="line.121"></a>
<span class="sourceLineNo">122</span>     */<a name="line.122"></a>
<span class="sourceLineNo">123</span>    public static double calculateColumnTotal(Values2D data, int column) {<a name="line.123"></a>
<span class="sourceLineNo">124</span>        if (data == null) {<a name="line.124"></a>
<span class="sourceLineNo">125</span>            throw new IllegalArgumentException("Null 'data' argument.");<a name="line.125"></a>
<span class="sourceLineNo">126</span>        }<a name="line.126"></a>
<span class="sourceLineNo">127</span>        double total = 0.0;<a name="line.127"></a>
<span class="sourceLineNo">128</span>        int rowCount = data.getRowCount();<a name="line.128"></a>
<span class="sourceLineNo">129</span>        for (int r = 0; r &lt; rowCount; r++) {<a name="line.129"></a>
<span class="sourceLineNo">130</span>            Number n = data.getValue(r, column);<a name="line.130"></a>
<span class="sourceLineNo">131</span>            if (n != null) {<a name="line.131"></a>
<span class="sourceLineNo">132</span>                total += n.doubleValue();<a name="line.132"></a>
<span class="sourceLineNo">133</span>            }<a name="line.133"></a>
<span class="sourceLineNo">134</span>        }<a name="line.134"></a>
<span class="sourceLineNo">135</span>        return total;<a name="line.135"></a>
<span class="sourceLineNo">136</span>    }<a name="line.136"></a>
<span class="sourceLineNo">137</span><a name="line.137"></a>
<span class="sourceLineNo">138</span>    /**<a name="line.138"></a>
<span class="sourceLineNo">139</span>     * Returns the total of the values in one column of the supplied data<a name="line.139"></a>
<span class="sourceLineNo">140</span>     * table by taking only the row numbers in the array into account.<a name="line.140"></a>
<span class="sourceLineNo">141</span>     *<a name="line.141"></a>
<span class="sourceLineNo">142</span>     * @param data  the table of values (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.142"></a>
<span class="sourceLineNo">143</span>     * @param column  the column index (zero-based).<a name="line.143"></a>
<span class="sourceLineNo">144</span>     * @param validRows the array with valid rows (zero-based).<a name="line.144"></a>
<span class="sourceLineNo">145</span>     *<a name="line.145"></a>
<span class="sourceLineNo">146</span>     * @return The total of the valid values in the specified column.<a name="line.146"></a>
<span class="sourceLineNo">147</span>     *<a name="line.147"></a>
<span class="sourceLineNo">148</span>     * @since 1.0.13<a name="line.148"></a>
<span class="sourceLineNo">149</span>     */<a name="line.149"></a>
<span class="sourceLineNo">150</span>     public static double calculateColumnTotal(Values2D data, int column,<a name="line.150"></a>
<span class="sourceLineNo">151</span>             int[] validRows) {<a name="line.151"></a>
<span class="sourceLineNo">152</span>        if (data == null) {<a name="line.152"></a>
<span class="sourceLineNo">153</span>            throw new IllegalArgumentException("Null 'data' argument.");<a name="line.153"></a>
<span class="sourceLineNo">154</span>        }<a name="line.154"></a>
<span class="sourceLineNo">155</span>        double total = 0.0;<a name="line.155"></a>
<span class="sourceLineNo">156</span>        int rowCount = data.getRowCount();<a name="line.156"></a>
<span class="sourceLineNo">157</span>        for (int v = 0; v &lt; validRows.length; v++) {<a name="line.157"></a>
<span class="sourceLineNo">158</span>            int row = validRows[v];<a name="line.158"></a>
<span class="sourceLineNo">159</span>            if (row &lt; rowCount) {<a name="line.159"></a>
<span class="sourceLineNo">160</span>                Number n = data.getValue(row, column);<a name="line.160"></a>
<span class="sourceLineNo">161</span>                if (n != null) {<a name="line.161"></a>
<span class="sourceLineNo">162</span>                    total += n.doubleValue();<a name="line.162"></a>
<span class="sourceLineNo">163</span>                }<a name="line.163"></a>
<span class="sourceLineNo">164</span>            }<a name="line.164"></a>
<span class="sourceLineNo">165</span>        }<a name="line.165"></a>
<span class="sourceLineNo">166</span>        return total;<a name="line.166"></a>
<span class="sourceLineNo">167</span>    }<a name="line.167"></a>
<span class="sourceLineNo">168</span><a name="line.168"></a>
<span class="sourceLineNo">169</span>    /**<a name="line.169"></a>
<span class="sourceLineNo">170</span>     * Returns the total of the values in one row of the supplied data<a name="line.170"></a>
<span class="sourceLineNo">171</span>     * table.<a name="line.171"></a>
<span class="sourceLineNo">172</span>     *<a name="line.172"></a>
<span class="sourceLineNo">173</span>     * @param data  the table of values (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.173"></a>
<span class="sourceLineNo">174</span>     * @param row  the row index (zero-based).<a name="line.174"></a>
<span class="sourceLineNo">175</span>     *<a name="line.175"></a>
<span class="sourceLineNo">176</span>     * @return The total of the values in the specified row.<a name="line.176"></a>
<span class="sourceLineNo">177</span>     */<a name="line.177"></a>
<span class="sourceLineNo">178</span>    public static double calculateRowTotal(Values2D data, int row) {<a name="line.178"></a>
<span class="sourceLineNo">179</span>        if (data == null) {<a name="line.179"></a>
<span class="sourceLineNo">180</span>            throw new IllegalArgumentException("Null 'data' argument.");<a name="line.180"></a>
<span class="sourceLineNo">181</span>        }<a name="line.181"></a>
<span class="sourceLineNo">182</span>        double total = 0.0;<a name="line.182"></a>
<span class="sourceLineNo">183</span>        int columnCount = data.getColumnCount();<a name="line.183"></a>
<span class="sourceLineNo">184</span>        for (int c = 0; c &lt; columnCount; c++) {<a name="line.184"></a>
<span class="sourceLineNo">185</span>            Number n = data.getValue(row, c);<a name="line.185"></a>
<span class="sourceLineNo">186</span>            if (n != null) {<a name="line.186"></a>
<span class="sourceLineNo">187</span>                total += n.doubleValue();<a name="line.187"></a>
<span class="sourceLineNo">188</span>            }<a name="line.188"></a>
<span class="sourceLineNo">189</span>        }<a name="line.189"></a>
<span class="sourceLineNo">190</span>        return total;<a name="line.190"></a>
<span class="sourceLineNo">191</span>    }<a name="line.191"></a>
<span class="sourceLineNo">192</span><a name="line.192"></a>
<span class="sourceLineNo">193</span>    /**<a name="line.193"></a>
<span class="sourceLineNo">194</span>     * Returns the total of the values in one row of the supplied data<a name="line.194"></a>
<span class="sourceLineNo">195</span>     * table by taking only the column numbers in the array into account.<a name="line.195"></a>
<span class="sourceLineNo">196</span>     *<a name="line.196"></a>
<span class="sourceLineNo">197</span>     * @param data  the table of values (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.197"></a>
<span class="sourceLineNo">198</span>     * @param row  the row index (zero-based).<a name="line.198"></a>
<span class="sourceLineNo">199</span>     * @param validCols the array with valid cols (zero-based).<a name="line.199"></a>
<span class="sourceLineNo">200</span>     *<a name="line.200"></a>
<span class="sourceLineNo">201</span>     * @return The total of the valid values in the specified row.<a name="line.201"></a>
<span class="sourceLineNo">202</span>     *<a name="line.202"></a>
<span class="sourceLineNo">203</span>     * @since 1.0.13<a name="line.203"></a>
<span class="sourceLineNo">204</span>     */<a name="line.204"></a>
<span class="sourceLineNo">205</span>     public static double calculateRowTotal(Values2D data, int row,<a name="line.205"></a>
<span class="sourceLineNo">206</span>             int[] validCols) {<a name="line.206"></a>
<span class="sourceLineNo">207</span>        if (data == null) {<a name="line.207"></a>
<span class="sourceLineNo">208</span>            throw new IllegalArgumentException("Null 'data' argument.");<a name="line.208"></a>
<span class="sourceLineNo">209</span>        }<a name="line.209"></a>
<span class="sourceLineNo">210</span>        double total = 0.0;<a name="line.210"></a>
<span class="sourceLineNo">211</span>        int colCount = data.getColumnCount();<a name="line.211"></a>
<span class="sourceLineNo">212</span>        for (int v = 0; v &lt; validCols.length; v++) {<a name="line.212"></a>
<span class="sourceLineNo">213</span>            int col = validCols[v];<a name="line.213"></a>
<span class="sourceLineNo">214</span>            if (col &lt; colCount) {<a name="line.214"></a>
<span class="sourceLineNo">215</span>                Number n = data.getValue(row, col);<a name="line.215"></a>
<span class="sourceLineNo">216</span>                if (n != null) {<a name="line.216"></a>
<span class="sourceLineNo">217</span>                    total += n.doubleValue();<a name="line.217"></a>
<span class="sourceLineNo">218</span>                }<a name="line.218"></a>
<span class="sourceLineNo">219</span>            }<a name="line.219"></a>
<span class="sourceLineNo">220</span>        }<a name="line.220"></a>
<span class="sourceLineNo">221</span>        return total;<a name="line.221"></a>
<span class="sourceLineNo">222</span>    }<a name="line.222"></a>
<span class="sourceLineNo">223</span><a name="line.223"></a>
<span class="sourceLineNo">224</span>    /**<a name="line.224"></a>
<span class="sourceLineNo">225</span>     * Constructs an array of &lt;code&gt;Number&lt;/code&gt; objects from an array of<a name="line.225"></a>
<span class="sourceLineNo">226</span>     * &lt;code&gt;double&lt;/code&gt; primitives.<a name="line.226"></a>
<span class="sourceLineNo">227</span>     *<a name="line.227"></a>
<span class="sourceLineNo">228</span>     * @param data  the data (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.228"></a>
<span class="sourceLineNo">229</span>     *<a name="line.229"></a>
<span class="sourceLineNo">230</span>     * @return An array of &lt;code&gt;Double&lt;/code&gt;.<a name="line.230"></a>
<span class="sourceLineNo">231</span>     */<a name="line.231"></a>
<span class="sourceLineNo">232</span>    public static Number[] createNumberArray(double[] data) {<a name="line.232"></a>
<span class="sourceLineNo">233</span>        if (data == null) {<a name="line.233"></a>
<span class="sourceLineNo">234</span>            throw new IllegalArgumentException("Null 'data' argument.");<a name="line.234"></a>
<span class="sourceLineNo">235</span>        }<a name="line.235"></a>
<span class="sourceLineNo">236</span>        Number[] result = new Number[data.length];<a name="line.236"></a>
<span class="sourceLineNo">237</span>        for (int i = 0; i &lt; data.length; i++) {<a name="line.237"></a>
<span class="sourceLineNo">238</span>            result[i] = new Double(data[i]);<a name="line.238"></a>
<span class="sourceLineNo">239</span>        }<a name="line.239"></a>
<span class="sourceLineNo">240</span>        return result;<a name="line.240"></a>
<span class="sourceLineNo">241</span>    }<a name="line.241"></a>
<span class="sourceLineNo">242</span><a name="line.242"></a>
<span class="sourceLineNo">243</span>    /**<a name="line.243"></a>
<span class="sourceLineNo">244</span>     * Constructs an array of arrays of &lt;code&gt;Number&lt;/code&gt; objects from a<a name="line.244"></a>
<span class="sourceLineNo">245</span>     * corresponding structure containing &lt;code&gt;double&lt;/code&gt; primitives.<a name="line.245"></a>
<span class="sourceLineNo">246</span>     *<a name="line.246"></a>
<span class="sourceLineNo">247</span>     * @param data  the data (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.247"></a>
<span class="sourceLineNo">248</span>     *<a name="line.248"></a>
<span class="sourceLineNo">249</span>     * @return An array of &lt;code&gt;Double&lt;/code&gt;.<a name="line.249"></a>
<span class="sourceLineNo">250</span>     */<a name="line.250"></a>
<span class="sourceLineNo">251</span>    public static Number[][] createNumberArray2D(double[][] data) {<a name="line.251"></a>
<span class="sourceLineNo">252</span>        if (data == null) {<a name="line.252"></a>
<span class="sourceLineNo">253</span>            throw new IllegalArgumentException("Null 'data' argument.");<a name="line.253"></a>
<span class="sourceLineNo">254</span>        }<a name="line.254"></a>
<span class="sourceLineNo">255</span>        int l1 = data.length;<a name="line.255"></a>
<span class="sourceLineNo">256</span>        Number[][] result = new Number[l1][];<a name="line.256"></a>
<span class="sourceLineNo">257</span>        for (int i = 0; i &lt; l1; i++) {<a name="line.257"></a>
<span class="sourceLineNo">258</span>            result[i] = createNumberArray(data[i]);<a name="line.258"></a>
<span class="sourceLineNo">259</span>        }<a name="line.259"></a>
<span class="sourceLineNo">260</span>        return result;<a name="line.260"></a>
<span class="sourceLineNo">261</span>    }<a name="line.261"></a>
<span class="sourceLineNo">262</span><a name="line.262"></a>
<span class="sourceLineNo">263</span>    /**<a name="line.263"></a>
<span class="sourceLineNo">264</span>     * Returns a {@link KeyedValues} instance that contains the cumulative<a name="line.264"></a>
<span class="sourceLineNo">265</span>     * percentage values for the data in another {@link KeyedValues} instance.<a name="line.265"></a>
<span class="sourceLineNo">266</span>     * &lt;p&gt;<a name="line.266"></a>
<span class="sourceLineNo">267</span>     * The percentages are values between 0.0 and 1.0 (where 1.0 = 100%).<a name="line.267"></a>
<span class="sourceLineNo">268</span>     *<a name="line.268"></a>
<span class="sourceLineNo">269</span>     * @param data  the data (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.269"></a>
<span class="sourceLineNo">270</span>     *<a name="line.270"></a>
<span class="sourceLineNo">271</span>     * @return The cumulative percentages.<a name="line.271"></a>
<span class="sourceLineNo">272</span>     */<a name="line.272"></a>
<span class="sourceLineNo">273</span>    public static KeyedValues getCumulativePercentages(KeyedValues data) {<a name="line.273"></a>
<span class="sourceLineNo">274</span>        if (data == null) {<a name="line.274"></a>
<span class="sourceLineNo">275</span>            throw new IllegalArgumentException("Null 'data' argument.");<a name="line.275"></a>
<span class="sourceLineNo">276</span>        }<a name="line.276"></a>
<span class="sourceLineNo">277</span>        DefaultKeyedValues result = new DefaultKeyedValues();<a name="line.277"></a>
<span class="sourceLineNo">278</span>        double total = 0.0;<a name="line.278"></a>
<span class="sourceLineNo">279</span>        for (int i = 0; i &lt; data.getItemCount(); i++) {<a name="line.279"></a>
<span class="sourceLineNo">280</span>            Number v = data.getValue(i);<a name="line.280"></a>
<span class="sourceLineNo">281</span>            if (v != null) {<a name="line.281"></a>
<span class="sourceLineNo">282</span>                total = total + v.doubleValue();<a name="line.282"></a>
<span class="sourceLineNo">283</span>            }<a name="line.283"></a>
<span class="sourceLineNo">284</span>        }<a name="line.284"></a>
<span class="sourceLineNo">285</span>        double runningTotal = 0.0;<a name="line.285"></a>
<span class="sourceLineNo">286</span>        for (int i = 0; i &lt; data.getItemCount(); i++) {<a name="line.286"></a>
<span class="sourceLineNo">287</span>            Number v = data.getValue(i);<a name="line.287"></a>
<span class="sourceLineNo">288</span>            if (v != null) {<a name="line.288"></a>
<span class="sourceLineNo">289</span>                runningTotal = runningTotal + v.doubleValue();<a name="line.289"></a>
<span class="sourceLineNo">290</span>            }<a name="line.290"></a>
<span class="sourceLineNo">291</span>            result.addValue(data.getKey(i), new Double(runningTotal / total));<a name="line.291"></a>
<span class="sourceLineNo">292</span>        }<a name="line.292"></a>
<span class="sourceLineNo">293</span>        return result;<a name="line.293"></a>
<span class="sourceLineNo">294</span>    }<a name="line.294"></a>
<span class="sourceLineNo">295</span><a name="line.295"></a>
<span class="sourceLineNo">296</span>}<a name="line.296"></a>




























































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